Autoscaling Nodes of a Stateful Application Based on Role-Based Autoscaling Policies

3. The method of claim 1, wherein the role-based autoscaling policy includes a first role identifier that identifies the first role, and a second role identifier that identifies the second role.

4. The method of claim 3, wherein the role-based autoscaling policy comprises a tandem section including the second role identifier and tandem action information specifying the scaling out of the second role by the second scaling factor.

5. The method of claim 1, wherein the load information comprises one or more of a measure of central processing unit (CPU) usage by the first application containers, a measure of memory usage by the first application containers, a measure of disk usage by the first application containers, or a measure of network usage by the first application containers.

6. The method of claim 1, wherein the at least one worker host previously did not include any of the first application containers.

7. The method of claim 1, wherein the load information meeting the first condition comprises the load information meeting any one or more of a set of conditions that includes the first condition.

8. The method of claim 1, wherein the plurality of worker hosts include server machines.

11. The non-transitory machine readable medium of claim 9, wherein the role-based autoscaling policy includes a first role identifier that identifies the first role, and a second role identifier that identifies the second role.

12. The non-transitory machine readable medium of claim 11, wherein the role-based autoscaling policy comprises a tandem section including the second role identifier and tandem action information specifying the scaling out of the second role by the second scaling factor.

13. The non-transitory machine readable medium of claim 9, wherein the load information comprises one or more of a measure of central processing unit (CPU) usage by the first application containers, a measure of memory usage by the first application containers, a measure of disk usage by the first application containers, or a measure of network usage by the first application containers.

14. The non-transitory machine readable medium of claim 9, wherein the at least one worker host previously did not include any of the first application containers.

17. The system of claim 15, wherein the role-based autoscaling policy includes a first role identifier that identifies the first role, and a second role identifier that identifies the second role.

18. The system of claim 17, wherein the role-based autoscaling policy comprises a tandem section including the second role identifier and tandem action information specifying the scaling out of the second role by the second scaling factor.

19. The system of claim 15, wherein the load information comprises one or more of a measure of central processing unit (CPU) usage by the first application containers, a measure of memory usage by the first application containers, a measure of disk usage by the first application containers, or a measure of network usage by the first application containers.